My PC is underperforming in games and I have no idea why.

Hopefully if you go to each fan and follow its cable, there should be the standard 3pin or 4pin connector.
You may find it goes into an adapter to a) extend the length so it reaches your RGB controller, and b) that allows it to get converted into the type that goes onto that controller.

Hmmm, bugger me, that shows how far I'm behind in the RGB universe.
Honestly, I've never bothered delving too deep into it as it doesn't interest me - in fact, having all those flashing lights would probably irritate me!

If you look into the pin layout of the SYS_FAN ports on the motherboard and then compare that to the pin layouts of the RGB fans, you may find 3 or 4 pins are the same.
Meaning they can plug into the mobo header ports, just offset a bit.
For example, I've put 4pin fan connector onto a 3pin mobo header, with 1pin blowing in the breeze. That unused pin wasn't necessary for my uses.

But that's just a temp fix, we need to work out why the RGB controller may not be getting power.
The picture you provided in post #14, that right hand cable, you have that in LED_C1, what about the left hand power cable, that's in a molex connector coming from the power supply?
Should look like this;

@Waffle Man - any update?

Closing – logged in since above post, no response, assuming all is good. 🙂
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